Energy & Sustainability

Melting Glaciers Muck Up Earth’s Gravitational Field

Clever use of gravity data shows that glacial retreat really is a global phenomena.

SINGAPORE—Photographs never quite capture the sparkling blue tint of glacial ice, so when I visited the Perito Moreno glacier in Patagonia on a backpacking trip through South America some years ago, I was happy to get this camera angle: the blue of the Argentine flag gives you a sense of what the blue of the […]

Are You a Global Warming Skeptic? Part IV

In 2006 I undertook an experiment to listen to people who are skeptical about climate science and try to address their concerns.

After a two-month hiatus, I’ve finally found the time to pick up the thread on doubts about global warming and humans’ role in it. In previous installments, people wrote in with the reasons why they were skeptical and I tried to synthesize the responses. In a rough-and-ready poll to gauge which line of reasoning resonated […]

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